lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240228131249.GE292522@kernel.org>
Date: Wed, 28 Feb 2024 13:12:49 +0000
From: Simon Horman <horms@...nel.org>
To: William Tu <witu@...dia.com>
Cc: netdev@...r.kernel.org, jiri@...dia.com, bodong@...dia.com,
	tariqt@...dia.com, yossiku@...dia.com, kuba@...nel.org
Subject: Re: [PATCH net-next RFC 1/2] devlink: Add shared descriptor eswitch
 attr

On Wed, Feb 28, 2024 at 03:59:53AM +0200, William Tu wrote:

...

> diff --git a/net/devlink/netlink_gen.c b/net/devlink/netlink_gen.c
> index c81cf2dd154f..ac8b0c7105dd 100644
> --- a/net/devlink/netlink_gen.c
> +++ b/net/devlink/netlink_gen.c
> @@ -194,12 +194,14 @@ static const struct nla_policy devlink_eswitch_get_nl_policy[DEVLINK_ATTR_DEV_NA
>  };
>  
>  /* DEVLINK_CMD_ESWITCH_SET - do */
> -static const struct nla_policy devlink_eswitch_set_nl_policy[DEVLINK_ATTR_ESWITCH_ENCAP_MODE + 1] = {
> +static const struct nla_policy devlink_eswitch_set_nl_policy[DEVLINK_ATTR_ESWITCH_SHRDESC_COUNT + 1] = {
>  	[DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING, },
>  	[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING, },
>  	[DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_MAX(NLA_U16, 1),
>  	[DEVLINK_ATTR_ESWITCH_INLINE_MODE] = NLA_POLICY_MAX(NLA_U16, 3),
>  	[DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = NLA_POLICY_MAX(NLA_U8, 1),
> +	[DEVLINK_ATTR_ESWITCH_SHRDESC_MODE] = NLA_POLICY_MAX(NLA_U8, 1),
> +	[DEVLINK_ATTR_ESWITCH_SHRDESC_COUNT] = NLA_POLICY_MAX(NLA_U32, 65535),
>  };

Hi William,

I realise this is probably not central to your purpose in sending an RFC,
but my understanding is that the max value set using NLA_POLICY_MAX
is of type s16, and thus 65535 is too large - it becomes -1.

Flagged by W=1 build with clang-17.

>  
>  /* DEVLINK_CMD_DPIPE_TABLE_GET - do */

...

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ